Not that I'm a stay at home mom but these are great ideas! The Stay-at-Home-Mom Survival Guide: Toddler Activities - peeling tape off the table (or fridge) develops fine motor skills (lots of ideas here)
Brilliant Timesavers and Organizing Ideas Store all the Lego manuals in one binder so you have them at your fingertips (plus find a bunch of other great Lego storage ideas in the link under the photo).
Super cute idea for a playroom! DIY magnet board - 1 sheet of galvanized metal (comes in a lot of different sizes in the plumbing section) wall trim or frame. Cover in fabric. Could use felt so it can be a magnet board or felt board
Vinyl Decal Stickers to make a DIY Play Stove Tote Lid